Nail-machine



(No Model.) 2 SheetsSheet l.

L. BRADFORD, 2d.

NAIL MACHINE.

No. 333,103. Patented Dec. 29, 1885.

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(No Model.)

L. BRADFORD, 2d.

NAIL MACHINE.

I n venZ'a -1;; Jtlonuy [UNITE STATES PATENT OFFIQE.

LEMUEL BRADFORD, 2D, OF PLYMOUTH, MASSACHUSETTS.-

NAlL-M ACHINE.

SPECIFICATION forming part of Letters Patent No. 333.103, dated December29, 1885.

Application filed February 24, 1885. Serial No. 156,660. (No model.) 7

To allwhom it may concern:

Be it known that I, LEMUEL BRADFORD, 2d,

: of Plymouth, in the county of Plymouth, State of Massachusetts, haveinvented a certain new and useful Improvement in Nail-Machines, of whichthe following is a description suffi ciently full,clear,and exact toenable any per: son skilled in the art or science to which saidinvention appertains to make and use I the same, reference being had tothe accompany- I ing drawings, forming part of this specification, inwhich- Figure 1 is a side elevation of my improved nail-machine; Fig. 2,a top plan view of the same; Fig. 3, a vertical longitudinal sectiontaken on the dotted line we in Fig. 2; Fig. 4, a vertical transversesection taken on the dotted line y y in Fig. 2, and Fig. 5 a verticaltransverse section taken on the line zz in Fig. 2.

Like letters of reference indicate corresponding parts in the differentfigures of the drawings.

My invention relates to that class of nailmachines which are designedfor making wire nails, or nails which are cut from a continuous wire;and it consists in a novel construction and, arrangement of the parts ashereinafter more fully set forth and claimed by which a more effectiveand otherwise desirable device of this character is produced than is nowin ordinary use.

The nature and operation of the improvement will be readily understoodby all conversant with such matters from the following explanation. I

In the drawings, A represents the bed-piece or body of the machine, Bthe main shaft, and

O the balance or fly wheel. The shaft is journaled horizontally instandards D, and provided at its center with a crank, E, and pitman F.Disposed on the shaftat either side 'of the crank E there is a cam, G,the cams I lever, N,said last-named lever being also j0int-' ed at h tothe stock J, and both of said levers jointed at g to the lower end ofthepitman F, the upper end of which is connected with the crank E. Fitted,to slide transversely in proper ways in the bed A, at either side ofthemachine, there is abloek, O, and arranged to slide longitudinally ineither of said blocks there is a stock, P, carrying a cutter, t, thecutters being respectively secured in the stocks by the screws m andthestocks in the block by the screws n. A cap, Q. carrying anadjustingscrew, j, is placed over the outer end of either block 0, thecaps being respectively provided with slots k, for receivingthe screwsl, and with inwardly-projecting horizontally arranged lips or flanges p,which rest on said blocks. The screws Z are inserted in the outer endsof the blocks 0, the caps Q being passed down over the same until thelips or flanges 12 rest on said blocks. The screws j are for adj usting'the stocks P, said stocks being firmly secured in their respectiveblocks after adjustment by the screws a. As an additional means ofsecuring the caps Q on the blocks 0, the lipsp of said caps are eachprovided with a downwardly-projecting stud, r, which enters acorresponding socket in the block when the cap is in position for use,as shown in Figs. 1 and 4. Pivoted at t to the bed A, at either side ofthe stock J, there are horizontally-arranged levers R, said levers beingrespectively j ointed at one end to the blocks 0, and provided at theother with studs 1;,which project upward ly into the grooves a b of thecams'G. Two 7 clamping-blocks or grippers, S T, are disposed in a propersocket formed in the bed A,

opposite the outer end of the header K, the 0 block S being madelaterally adjustable by the screw w. A plate, W, is placed in the socketabove the blocks, said plate being provided on its under side with astud, e,which projects downwardly into an elongated slot in the top ofthe block '1, as shown in Fig. 5 thereby permitting said block to slidelaterally. A cap-plate,Y, is placed over the plate W, being secured tothe bed of the machine by screws g, which pass through slots in theplate and per- 10 mit its removal, as shown in Fig. 2. A screw,

0, passes through the plate Y, and is adapted to engage the plate W, theobject of said screw being to secure the block S firmly after it isadjusted by the screw w. The blocks S T are centrally grooved on theiradjoining faces, as shown at s, to receive the wire,which is passed intothe machine by feed mechanism (not shown) through the guide V. Apush-pin or sliding rod, D", is fitted to work horizontally in the bedA, the inner end of said pin being adapted to engage the block T, andits outer end an adjusting-screw, 0, in a curved lever, B", which ispivoted at b to the bed A. A face-cam, H is mounted on the shaft B, saidcam being kept in engagement with the upper end of the lever E by thecontractile action of the coiled spring (2", one end of which isattached to said lever and the other to the body of the machine. A11annular face plate or disk, J is also mounted on the shaft B, said platebeing grooved transversely across its outer face, as shown atf inFig. 1. A bar, K is fitted to slide in said groove, and jointed theretoat h is a pitman-rod, M. A tire or band, N, is fitted to the disk J,said band being provided with the screws Z adapted to engage and adjustthe sliding bar K The disk J adjustable bar K and pitman IVP aredesigned to actuate the feed mechanism of the machine, which it is notdeemed essential to show, as any suitable mechanism for that purposemaybe employed in conjunction with the blocks S T, rod D", lever E, andcam H In the use of my improvement, a sufficient w quantity of wirehaving first been fed into the machine to form one nail, the shaft B isturned, as indicated by the arrows, causing the cam H to act-upon thelever E and force the rod D against the block T, thereby clamping thewire firmly between the blocks S T. The shaft continuing to revolve, theheader K is drawn back out of the Way of the cutters t, after which saidcutters are moved toward each other by the cams G and levers R until thecutters sever the wire or cut off the nail, which then falls through thespace or opening 31 into any proper receptacle. After the nail has beencut off, as described, the shaft continuing to revolve, the cutters arewithdrawn, the levers M N depressed, and the header K forced forwardbetween the receding cutters against the in wardly-protruding end of thewire, which is still held clamped between the blocks S T, therebyforming a head on the next succeeding nail. The shaft still continuingto revolve, the lever E is next withdrawn from contact with the pin D",thereby releasing the wire, after which it is fed forward the length ofanother nail and again clamped between the blocks S T, the header K atthe same time receding to permit the entrance of the wire. When the wirehas been clamped, as described, the shaft still continuing to rotate,the cutters will be again moved toward each other, and cut off theheaded nail in a manner which will be readily obviouswithout a moreexplicit descrip -tion.

It will be understood that the cutting-edges or inner ends of thecutters are so constructed as to point the nails or give the points asuitable shape; also, that the header may be so constructed as to givethe head of the nail nearly any desired form. The cap-plates Q enablethe cutter-stocks and cutters to be readily removed from or inserted inthe sliding blocks 0, for the purpose of grinding the cutters orreplacing them when broken.

It will also be understood that all of the working parts of the machineare to be so constructed and timed as to perform their respectivefunctions properly.

Having thus explained my invention, what I claim is 1. Ina nail-machine,the pivoted lever E push-pin D", blocks S T, cutters z, stocks P, blocks0, and header K, incouibination with means for securing and adjustingthe stocks P in the blocks 0, securing and adjusting the blocks S T intheir socket, and means for actuating said lever, cutters, and header,substantially as described.

2. In a nail-machine, the plate Y, provided with the clamping-screwc,the plate W, provided with the stud e, the blocks S T, screws q, and bedA, combined and arranged to opcrate substantially as set forth.

3. In a nail-machine, the stocks 1?, carry ing the cutters a, incombination with the sliding blocks and means for reciprocating saidcutters, substantially as set forth.

4. In a nail-machine, the blocks 0, carrying the stocks P, and providedwith the plates Q,

substantially as described. I

5. In a nail-machine, the plates Q, provide withthe adjustingscrews j,in combination with the blocks 0 and means for detachably connectingsaid plates to said blocks, substantially as and for the purpose setforth.

6. In a nail-machine, the blocks 0, provided with the screws or Z,stocks P, provided with the cutters i and screws m, plates Q, providedwith the screws j, and the levers It, provided with the studs 0, incombination with the cams G H, shaft B, lever E", push-pin D", blocks ST, header K, stock J, levers N M, pitman F, and body A, substantially asdescribed.

7. In a nail-machine, the push-pin D, in combination with the pivotedlever E, blocks S T, cutters t, stocks P, blocks 0, header K, cam Hshaft B, and operative mechanism,

substantially as described.

8. In a nail-machine, the plate WV, provided with the stud c, the blockT, provided with an elongated slot for receiving said stud, means forsecuring said plate, and means for forcing said block against the blockS to grasp the wire, substantially as described.

LEMUEL BRADFORD, 2D.

Witnesses:

CHARLES A. SMITH, ARTHUR LORD.

